A monogamous couple is two. A polygamous couple can consist of 3 or more. However in Mathematics a couple refers to two of something.
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In numbers, couple means 2.
x-(2/3)+x+(5/2)=(1/3) is 2x+5/2=(1/3)+(2/3) 2x=1-(5/2) 2x=(2/2)-(5/2) 2x=-(3/2) x=-(3/4) Take it step by step and gather like terms. Only do one thing at a time. It may take a couple of pages you you get there in the end and if you make a mistake, it's easy to see where.
2
120
-3 -(-2) -(-3) -3 +2 +3 -1 +3 +2 = 2